iframe之间的传值问题?

Question

在home.aspx页中放有两个iframe控件:
1. iframe_listname(listname.aspx它里面包含一个DataList控件);
2. iframe_sendmsgs(sendmsgs.aspx它里面包含一个DropDownList控件);  现在我要点击listname.aspx里的DataList的项,传值给sendmsgs.aspx,并添加到DropDownList控件项
里面去.我试了以下几个方法都不行:
  期中dr["ChatName"].ToString() 是我要传的值.       1. this.Response.Write("<script language='javascript'>window.opener.location.href='sendmsgs.aspx?object=" + dr["ChatName"].ToString() + "'</script>");       2.Page.RegisterStartupScript("", "<script>document.getElementById('iframe_sendmsgs').src='sendmsgs.aspx?object=" + dr["ChatName"].ToString() + "'</script>");       3. Page.RegisterStartupScript("", "<script>document.frames('iframe_sendmsgs').location.href='sendmsgs.aspx?object=" + dr["ChatName"].ToString() + "'</script>");

Answer 1

Response.Write("<script>parent.frames['iframe_sendmsgs'].location.reload('SendMsgs.aspx?object=" + dr["ChatName"].ToString () +"');</script>");